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Sennybridge jamming trial

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Steve J21/08/2019 17:47:43
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1374 forum posts
41 photos

Does anybody fly near the Sennybridge danger area in South Wales?

"Jamming activity will take place 22nd - 23rd August 2019 near the Sennybridge training area, South Wales.

"The activity may affect UAV command and control (433MHz, 2.4GHz, 5.8GHz) up to 1000FT AMSL within the area bounded by 522112N 0045975W - 522112N 0025925W - 514405N 0025925W - 514405N 0045975W (South Powys, South Ceredigion, Carmathenshire, and Pembrokeshire).

"During the trials UAS command and control systems may suffer intermittent or total failure. GNSS Jamming will also take place as part of this activity under AIC P 110/2019."

Steve

eflightray21/08/2019 20:09:12
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574 forum posts
128 photos

Has anyone tried entering the coordinates into a map ?

I have, and it's nowhere near Sennybridge, unless I have it wrong. Used Bing maps.

52 21.12N, 00 45.975W

52 21.12N, 00 25.925W

51 44.05N, 00 25.925W

51 44.05N, 00 45975W

sennybridge.jpg

Ray.

Steve J21/08/2019 20:41:29
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1374 forum posts
41 photos
Posted by eflightray on 21/08/2019 20:09:12:

Has anyone tried entering the coordinates into a map ?

I have, and it's nowhere near Sennybridge, unless I have it wrong.

I hadn't. I have now. The first three digits of the longitude will be degrees. I make it a pretty big area, much bigger than the Sennybridge danger area.

jamming.jpg

Steve

Edited By Steve J on 21/08/2019 20:59:05

eflightray21/08/2019 21:25:43
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574 forum posts
128 photos

Thanks Steve. I will have to put my tinfoil hat on after all.

wink

Ray.

Peter Jenkins22/08/2019 00:15:23
1234 forum posts
132 photos

If those are decimal fractions, 522112 N is actually 52 deg 12 min 40.3 secs which puts it into Cardigan Bay. If you do that for all of them, it puts the bottom left point south of Tenby, and the bottom right point near Bristol with the top right point just to the East of the B4214 to the north of Bromyard. It's still a pretty big area.

Eflightray I think you may be wrong as using the decimal version you get a large area with Sennybridge in the middle.

I do wonder how they have promulgated this as it might cause a lot of trouble to not use those flying model aircraft. You wouldn't want your home wifi jammed!

J D 822/08/2019 08:15:30
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1230 forum posts
74 photos

Our model club operates in the area of Steve's map. We fly on a military owned site [ old airfield ]

When the military are operating this sort of equipment our club is informed and we are advised not to fly.

Nothing on the club website at this time.

Steve J22/08/2019 08:46:34
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1374 forum posts
41 photos

They have been conducting GNSS jamming trials from Sennybridge since the 5th and are doing so at Spadeadam later this month.

Steve

Brian Cooper22/08/2019 09:12:48
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435 forum posts
20 photos

We should be grateful that they have taken the trouble to inform us of the impending jamming.

Respectable manners like these are becoming rare these days.

B.C.

Jason-I22/08/2019 09:18:58
173 forum posts
33 photos

Good job I've still got my trusty old 35MHz sanwa kit....

eflightray22/08/2019 09:59:05
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574 forum posts
128 photos

Best way to prove the jamming works is loads of complaints from people who didn't know about the tests wink

Ray.

Steve Houghton 122/08/2019 10:03:11
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1885 forum posts
128 photos

Thanks for the info, I will pass it on to my slope flying buddies here in S Wales.

Steve J22/08/2019 10:05:03
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1374 forum posts
41 photos
Posted by Brian Cooper on 22/08/2019 09:12:48:

We should be grateful that they have taken the trouble to inform us of the impending jamming.

Announcing it on Skywise the day before isn't very impressive. I wonder if we will get a better level of service once we are providing a big chunk of the CAA UAS section's budget smiley.

Steve

Denis Watkins22/08/2019 10:35:35
3814 forum posts
54 photos

These devices are very directional and deployed after radar tracking and optical identification

16264958_auds_____1.jpg

David Davis22/08/2019 10:40:58
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3378 forum posts
592 photos

Here in the middle of France we were informed last week that model aircraft flying will not be permitted from 10th September to 13th September inclusive because of military exercises in the area.

Mike Blandford22/08/2019 11:17:48
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522 forum posts
22 photos

They don't mention the 868MHz band, I wonder if that is included?

Mike

Brian Cooper22/08/2019 14:21:09
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435 forum posts
20 photos

I have just tried out my old 35Mhz PCM radio. . . Works a treat. yes

It will be kept on standby just in case these jamming trials become a regular occurrence.

Peter Christy22/08/2019 14:53:14
1518 forum posts

I notice it doesn't mention 459MHz either, which is the *legal* UHF control frequency! 433MHz is the EU frequency, and I'm not sure it has ever been approved for model control in the UK. Mind you, there have been so many changes to the regs in such a short space of time, its difficult to keep up....!

--

Pete

Martin Harris23/08/2019 17:41:48
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8741 forum posts
214 photos

3 unexplained crashes at our field in North Hertfordshire yesterday afternoon. Who do we submit our claims to?

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